Rough English summary using google translate and my own knowledge of Spanish...

Hello, I have a situation that I do not know how to correct ...

My bagpipe is taking a lot to play, I removed the drones and cover all the stocks well, when I inflate the bag, I realize that it loses air and I do not see any obvious physical defect in the goretex bag or where the stocks are tied in. Now I have the following doubts:
1. How can I determine where the bagpipes are leaking?
2. Is it good to remove the stocks and tie them back in, is this recommended practice?
3. there is some maintenance for the goretex bags, I understand not according to the seivane .
4. I use a grease designed for clarinet cork, can this chemical damage the goretex?